Mother board

ABSTRACT

A mother board including a controller, a rapid charging initiation unit, a connection port, and a switching unit is provided. The rapid charging initiation unit provides a first voltage ranging from 3.2 V to 11 V and a second voltage ranging from 2.7 V to 0.6 V. A voltage difference between the first voltage and the second voltage ranges from 0.5 V to 0.8 V. The connection port is coupled to a smartphone. The switching unit is coupled to the controller, the rapid charging initiation unit, and the connection port for determining whether the connection port is coupled to the controller or the rapid charging initiation unit according to a switching signal. When the connection port is coupled to the rapid charging initiation unit, the first voltage and the second voltage are sent to the smartphone through the connection port for activating the rapid charging function of the smartphone.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention is related to a mother board and particularly to a motherboard capable of activating a rapid charging function of a smartphone.

2. Description of Related Art

Cellular phones have replaced traditional landline phones and become themost convenient communication channel with their increasingpopularization. Nevertheless, cellular phones carrying basic functionssuch as making phone calls, browsing internet, and playing multimediafiles can no longer satisfy various demands of consumers. To meetconsumers' demands, manufacturers of cellular phones work on developingsmartphones with more functions and better expandability for increasingtheir market share.

Since smartphones have functions similar to those of personal computers(PCs), smartphones and PCs can transmit data to each other by connectingsmartphones to connection ports of PCs through connection lines. Here,connection ports are, for example, universal serial bus (USB) connectionports. When data is transmitted between smartphones and PCs, batteriesof smartphones can also be charged by receiving power from PCs throughconnection ports. Charging smartphones through PCs has become morecommon due to the popularization of PCs. The manner of rapid chargingsmartphones through PCs is thus important.

SUMMARY OF THE INVENTION

The invention is directed to a mother board capable of activating arapid charging function of a smartphone.

The invention is directed to a mother board including a controller, arapid charging initiation unit, a connection port, and a switching unit.The controller is configured to output or receive a data signal. Therapid charging initiation unit provides a first voltage and a secondvoltage. The first voltage ranges from 3.2 V to 1.1 V, the secondvoltage ranges from 2.7 V to 0.6 V, and a voltage difference between thefirst voltage and the second voltage ranges from 0.5 V to 0.8 V. Theconnection port is coupled to the smartphone. The switching unit iscoupled to the controller, the rapid charging initiation unit, and theconnection port so as to determine whether the connection port iscoupled to the controller or the rapid charging initiation unitaccording to a switching signal. When the connection port is coupled tothe rapid charging initiation unit, the first voltage and the secondvoltage are sent to the smartphone through the connection port foractivating the rapid charging function of the smartphone.

In an embodiment of the invention, the rapid charging initiation unitincludes a first resistor, a second resistor, a third resistor, and afourth resistor. The first resistor has a first terminal coupled to asystem voltage and a second terminal outputting the first voltage. Thesecond resistor has a first terminal coupled to the second terminal ofthe first resistor and a second terminal coupled to a ground voltage.The third resistor has a first terminal coupled to the system voltageand a second terminal outputting the second voltage. The fourth resistorhas a first terminal coupled to the second terminal of the thirdresistor and a second terminal coupled to the ground voltage.

In an embodiment of the invention, the transmittance of the switchingsignal is determined by the setting of a basic input-output system(BIOS).

In an embodiment of the invention, the connection port is a universalserial bus (USB) connection port and the controller is a USB controller.

In an embodiment of the invention, the first voltage and the secondvoltage are sent to the smartphone via a first data pin and a seconddata pin of the connection port respectively.

In an embodiment of the invention, the switching unit pre-couples thecontroller to the connection port.

In an embodiment of the invention, the smartphone is an iPhone.

In light of the foregoing, the switching unit in the mother board of theinvention couples the connection port to the controller or the rapidcharging initiation unit according to the switching signal. When theconnection port is coupled to the rapid charging initiation unit, thefirst voltage and the second voltage of the rapid charging initiationunit are sent to the smartphone for activating the rapid chargingfunction of the smartphone, so as to increase the charging speed of thesmartphone.

In order to make the aforementioned and other features and advantages ofthe invention more comprehensible, embodiments accompanying figures aredescribed in detail below.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are included to provide a furtherunderstanding of the invention, and are incorporated in and constitute apart of this specification. The drawings illustrate embodiments of theinvention and, together with the description, serve to explain theprinciples of the invention.

FIG. 1 is a block diagram depicting a system of a mother board coupledto a smartphone according to an embodiment of the invention.

FIG. 2 is a circuit diagram of a rapid charging initiation unitillustrated in FIG. 1.

DESCRIPTION OF THE EMBODIMENTS

FIG. 1 is a block diagram depicting a system of a mother board coupledto a smartphone according to an embodiment of the invention. Referringto FIG. 1, in the present embodiment, a mother board 100 includes a dataprocessing circuit 110, a controller 120, a rapid charging initiationunit 130, a switching unit 140, a basic input-output system (BIOS) 150,and a connection port CP. The data processing circuit 110 is configuredto process data transmitted from the controller 120 or transmit data tothe controller 120. Here, the data processing circuit 110 is disposedwith devices required for data processing, such that the data processingcircuit 110 has data processing ability. The devices included in thedata processing circuit 110 are known to persons skilled in the art, andthus not repeated hereinafter.

After receiving data transmitted from the data processing circuit 110,the controller 120 outputs a data signal SD, where the data signal SD isa differential signal. On the contrary, after receiving the data signalSD, the controller 120 outputs data to the data processing circuit 110.The rapid charging initiation unit 130 is configured to provide a firstvoltage V1 and a second voltage V2. The first voltage V1 ranges from 3.2V to 1.1 V, the second voltage V2 ranges from 2.7 V to 0.6 V, and avoltage difference between the first voltage V1 and the second voltageV2 ranges from 0.5 V to 0.8 V. In addition, the first voltage V1 and thesecond voltage V2 are configured to active the rapid charging functionof a smartphone 20. Herein, the smartphone 20 is an iPhone, forinstance. The connection port CP is coupled to the smartphone 20.

The switching unit 140 is coupled to the controller 120, the rapidcharging initiation unit 130, and the connection port CP. The switchingunit 140 determines whether the connection port CP is coupled to thecontroller 120 or the rapid charging initiation unit 130 according to aswitching signal SS. Moreover, the switching unit 140 pre-couples thecontroller 120 to the connection port CP. The switching signal SS in thepresent embodiment is transmitted from the BIOS, where the switchingsignal SS is determined by the setting stored in the BIOS. However, inother embodiments, the switching signal SS can be transmitted from acontrol circuit or a switch, where the switching signal SS is determinedby the setting of the control circuit or the switch. When the connectionport CP is a universal serial bus (USB) connection port, then thecontroller 120 is correspondingly a USB controller.

When the connection port CP is coupled to the rapid charging initiationunit 130, the first voltage V1 and the second voltage V2 are sent to thesmartphone 20 through the connection port CP for activating the rapidcharging function of the smartphone 20. In details, the first voltage V1of the rapid charging initiation unit 130 is transmitted to a first datapin DP1 of the connection port CP through the switching unit 140, sothat the first voltage V1 is transmitted to the smartphone 20 via thefirst data pin DP1. Further, the second voltage V2 of the rapid charginginitiation unit 130 is transmitted to a second data pin DP2 of theconnection port CP through the switching unit 140, so that the secondvoltage V2 is transmitted to the smartphone 20 via the second data pinDP2. The first data pin DP1 is a positive data (D+) pin of the USBconnection port and the second data pin DP2 is a negative data (D−) pinof the USB connection port.

When the connection port CP is coupled to the controller 120, thecontroller 120 outputs the data signal SD to the smartphone 20 throughthe connection port CP or receives the data signal SD transmitted fromthe smartphone 20. Specifically, the data signal SD of the controller120 is transmitted to the smartphone 20 via the first data pin DP1 andthe second data pin DP2. The data signal SD of the smartphone 20 istransmitted to the controller 120 via the first data pin DP1 and thesecond data pin DP2.

Accordingly, when the smartphone 20 is coupled to the connection portCP, the switching unit 140 determines whether the connection port CP iscoupled to the controller 120 or the rapid charging initiation unit 130according to the switching signal SS. When the connection port CP iscoupled to the controller 120, data is transmitted between thesmartphone 20 and the data processing circuit 110. Moreover, thesmartphone 20 can receive power from the mother board 100 to undergoregular charging of cellular phone battery. When the connection port CPis coupled to the rapid charging initiation unit 130, the smartphone 20receives the first voltage V1 and the second voltage V2 of the rapidcharging initiation unit 130 to active the rapid charging function. As aresult, the smartphone 20 then receives power from the mother board 100to undergo rapid charging of the cellular phone battery.

FIG. 2 is a circuit diagram of a rapid charging initiation unitillustrated in FIG. 1. Referring to FIG. 2, in the present embodiment,the rapid charging initiation unit 130 includes a first resistor R1, asecond resistor R2, a third resistor R3, and a fourth resistor R4. Thefirst resistor R1 has a first terminal coupled to a system voltage Vccand a second terminal outputting the first voltage V1. The secondresistor R2 has a first terminal coupled to the second terminal of thefirst resistor R1 and a second terminal coupled to a ground voltage. Thethird resistor R3 has a first terminal coupled to the system voltage Vccand a second terminal outputting the second voltage V2. The fourthresistor R4 has a first terminal coupled to the second terminal of thethird resistor R3 and a second terminal coupled to the ground voltage.Herein, the system voltage Vcc is an operation voltage or a standbyvoltage of the mother board 100.

In summary, the switching unit in the mother board of the inventioncouples the connection port to the controller or the rapid charginginitiation unit according to the switching signal. When the connectionport is coupled to the rapid charging initiation unit, the first voltageand the second voltage of the rapid charging initiation unit are sent tothe smartphone for activating the rapid charging function of thesmartphone, so as to increase the charging speed of the smartphone.

Although the invention has been described with reference to the aboveembodiments, it will be apparent to one of the ordinary skill in the artthat modifications to the described embodiment may be made withoutdeparting from the spirit of the invention. Accordingly, the scope ofthe invention will be defined by the attached claims not by the abovedetailed descriptions.

1. A mother board, comprising: a controller, configured to output orreceive a data signal; a rapid charging initiation unit, providing afirst voltage and a second voltage, wherein the first voltage rangesfrom 3.2 Volts (V) to 1.1 V, the second voltage ranges from 2.7 V to 0.6V, and a voltage difference between the first voltage and the secondvoltage ranges from 0.5 V to 0.8 V; a connection port, coupled to asmartphone; and a switching unit, coupled to the controller, the rapidcharging initiation unit, and the connection port so as to determinewhether the connection port is coupled to the controller or the rapidcharging initiation unit according to a switching signal, wherein whenthe connection port is coupled to the rapid charging initiation unit,the first voltage and the second voltage are sent to the smartphonethrough the connection port to activate a rapid charging function of thesmartphone.
 2. The mother board as claimed in claim 1, wherein the rapidcharging initiation unit comprises: a first resistor, having a firstterminal coupled to a system voltage and a second terminal outputtingthe first voltage; a second resistor, having a first terminal coupled tothe second terminal of the first resistor and a second terminal coupledto a ground voltage; a third resistor, having a first terminal coupledto the system voltage and a second terminal outputting the secondvoltage; and a fourth resistor, having a first terminal coupled to thesecond terminal of the third resistor and a second terminal coupled tothe ground voltage.
 3. The mother board as claimed in claim 1, whereinwhether the switching signal is transmitted depends on a setting of abasic input-output system (BIOS).
 4. The mother board as claimed inclaim 1, wherein the connection port is a universal serial bus (USB)connection port and the controller is a USB controller.
 5. The motherboard as claimed in claim 4, wherein the first voltage and the secondvoltage are sent to the smartphone via a first data pin and a seconddata pin of the connection port respectively.
 6. The mother board asclaimed in claim 1, wherein the switching unit pre-couples thecontroller to the connection port.
 7. The mother board as claimed inclaim 1, wherein the smartphone is an iPhone.